* configure.ac (gcry_cv_gcc_arm_platform_as_ok)
(gcry_cv_gcc_aarch64_platform_as_ok)
(gcry_cv_gcc_inline_asm_ssse3, gcry_cv_gcc_inline_asm_pclmul)
(gcry_cv_gcc_inline_asm_shaext, gcry_cv_gcc_inline_asm_sse41)
(gcry_cv_gcc_inline_asm_avx, gcry_cv_gcc_inline_asm_avx2)
(gcry_cv_gcc_inline_asm_bmi2, gcry_cv_gcc_as_const_division_ok)
(gcry_cv_gcc_as_const_division_with_wadivide_ok)
(gcry_cv_gcc_amd64_platform_as_ok, gcry_cv_gcc_win64_platform_as_ok)
(gcry_cv_gcc_platform_as_ok_for_intel_syntax)
(gcry_cv_gcc_inline_asm_neon, gcry_cv_gcc_inline_asm_aarch32_crypto)
(gcry_cv_gcc_inline_asm_aarch64_neon)
(gcry_cv_gcc_inline_asm_aarch64_crypto)
(gcry_cv_gcc_inline_asm_ppc_altivec)
(gcry_cv_gcc_inline_asm_ppc_arch_3_00)
(gcry_cv_gcc_inline_asm_s390x, gcry_cv_gcc_inline_asm_s390x): Use
AC_LINK_IFELSE check instead of AC_COMPILE_IFELSE.